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Pesquisa : G16.500.275.505 [Categoria DeCS]
Referências encontradas : 6 [refinar]
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Texto completo SciELO Brasil
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Id: biblio-974298
Autor: Vásquez-Ponce, Felipe; Higuera-Llantén, Sebastián; Pavlov, María S; Marshall, Sergio H; Olivares-Pacheco, Jorge.
Título: Phylogenetic MLSA and phenotypic analysis identification of three probable novel Pseudomonas species isolated on King George Island, South Shetland, Antarctica
Fonte: Braz. j. microbiol;49(4):695-702, Oct.-Dec. 2018. tab, graf.
Idioma: en.
Projeto: Pontificia Universidad Católica de Valparaíso; . Programa de Investigación Asociativa.
Resumo: ABSTRACT Antarctica harbors a great diversity of microorganisms, including bacteria, archaea, microalgae and yeasts. The Pseudomonas genus is one of the most diverse and successful bacterial groups described to date, but only eight species isolated from Antarctica have been characterized. Here, we present three potentially novel species isolated on King George Island. The most abundant isolates from four different environments, were genotypically and phenotypically characterized. Multilocus sequence analysis and 16S rRNA gene analysis of a sequence concatenate for six genes (16S, aroE, glnS, gyrB, ileS and rpoD), determined one of the isolates to be a new Pseudomonas mandelii strain, while the other three are good candidates for new Pseudomonas species. Additionally, genotype analyses showed the three candidates to be part of a new subgroup within the Pseudomonas fluorescens complex, together with the Antarctic species Pseudomonas antarctica and Pseudomonas extremaustralis. We propose terming this new subgroup P. antarctica. Likewise, phenotypic analyses using API 20 NE and BIOLOG® corroborated the genotyping results, confirming that all presented isolates form part of the P. fluorescens complex. Pseudomonas genus research on the Antarctic continent is in its infancy. To understand these microorganisms' role in this extreme environment, the characterization and description of new species is vital.
Descritores: Filogenia
Pseudomonas/isolamento & purificação
Pseudomonas/classificação
-Fenótipo
Pseudomonas/genética
Microbiologia do Solo
DNA Bacteriano/genética
DNA Ribossômico/genética
RNA Ribossômico 16S/genética
Tipagem de Sequências Multilocus
Ilhas
Genótipo
Regiões Antárticas
Responsável: BR1.1 - BIREME


  2 / 6 LILACS  
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ARAUJO, JANSEN DE
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Id: biblio-889165
Autor: Vaz, Frederico Fontanelli; Serafini, Patrícia Pereira; Locatelli-Dittrich, Rosangela; Meurer, Rafael; Durigon, Edison Luiz; Araújo, Jansen de; Thomazelli, Luciano Matsumiya; Ometto, Tatiana; Sipinski, Elenise Angelotti Bastos; Sezerban, Rafael Meirelles; Abbud, Maria Cecília; Raso, Tânia Freitas.
Título: Survey of pathogens in threatened wild red-tailed Amazon parrot (Amazona brasiliensis) nestlings in Rasa Island, Brazil
Fonte: Braz. j. microbiol;48(4):747-753, Oct.-Dec. 2017. tab, graf.
Idioma: en.
Projeto: FAPESP.
Resumo: ABSTRACT The red-tailed Amazon parrot (Amazona brasiliensis) is a threatened species of psittacine bird that inhabit coastal regions of Brazil. In view of the threat of this species, the aim of this study was to perform a health evaluation in wild nestlings in Rasa Island, determining the prevalence of enterobacteria and infectious agents according to type of nest. Blood samples were collected from 64 birds and evaluated for antibodies of Chlamydia psittaci by commercial dot-blot ELISA. Cloacal and oropharyngeal swabs samples were collected from 23 birds from artificial wooden nests, 15 birds from PVC nests and 2 birds from natural nests for microbiological analysis. Swab samples were collected from 58 parrots for C. psittaci detection by PCR and from 50 nestlings for Avian Influenza, Newcastle Disease and West Nile viruses' detection analysis by real-time RT-PCR. Ten bacterial genera and 17 species were identified, and the most prevalent were Escherichia coli and Klebsiella oxytoca. There was no influence of the type of nest in the nestlings' microbiota. All samples tested by ELISA and PCR were negative. There is currently insufficient information available about the health of A. brasiliensis and data of this study provide a reference point for future evaluations and aid in conservation plans.
Descritores: Bactérias/isolamento & purificação
Infecções Bacterianas/veterinária
Vírus/isolamento & purificação
Doenças das Aves/microbiologia
Doenças das Aves/virologia
Viroses/veterinária
Amazona/microbiologia
Amazona/virologia
-Bactérias/classificação
Bactérias/genética
Infecções Bacterianas/microbiologia
Vírus/classificação
Vírus/genética
Brasil
Viroses/virologia
Espécies em Perigo de Extinção
Ilhas
Animais Selvagens/microbiologia
Animais Selvagens/virologia
Limites: Animais
Responsável: BR1.1 - BIREME


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Id: lil-741277
Autor: Venkadesaperumal, Gopu; Amaresan, Natrajan; Kumar, Krishna.
Título: Plant growth promoting capability and genetic diversity of bacteria isolated from mud volcano and lime cave of Andaman and Nicobar Islands
Fonte: Braz. j. microbiol;45(4):1271-1281, Oct.-Dec. 2014. ilus, tab.
Idioma: en.
Resumo: Twenty four bacterial strains from four different regions of mud volcano and lime cave were isolated to estimate their diversity, plant growth promoting and biocontrol activities to use them as inoculant strains in the fields. An excellent antagonistic effect against four plant pathogens and plant growth promoting properties such as IAA production, HCN production, phosphate solubilization, siderophore production, starch hydrolysis and hydrolytic enzymes syntheses were identified in OM5 (Pantoea agglomerans) and EM9 (Exiguobacterium sp.) of 24 studied isolates. Seeds (Chili and tomato) inoculation with plant growth promoting strains resulted in increased percentage of seedling emergence, root length and plant weight. Results indicated that co-inoculation gave a more pronounced effects on seedling emergence, secondary root numbers, primary root length and stem length, while inoculation by alone isolate showed a lower effect. Our results suggest that the mixed inocula of OM5 and EM9 strains as biofertilizers could significantly increase the production of food crops in Andaman archipelago by means of sustainable and organic agricultural system.
Descritores: Bacillales/isolamento & purificação
Capsicum/microbiologia
Microbiologia Ambiental
Lycopersicon esculentum/microbiologia
Desenvolvimento Vegetal
Pantoea/isolamento & purificação
Reguladores de Crescimento de Planta/metabolismo
-Biomassa
Bacillales/classificação
Bacillales/genética
Bacillales/metabolismo
Capsicum/fisiologia
DNA Bacteriano/química
DNA Bacteriano/genética
DNA Ribossômico/química
DNA Ribossômico/genética
Índia
Ilhas
Lycopersicon esculentum/fisiologia
Dados de Sequência Molecular
Pantoea/classificação
Pantoea/genética
Pantoea/metabolismo
Raízes de Plantas/crescimento & desenvolvimento
/genética
RNA, RIBOSOMAL, ABNORMALITIES, MULTIPLES/genética
Análise de Sequência de DNA
Plântulas/crescimento & desenvolvimento
Responsável: BR1.1 - BIREME


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Texto completo SciELO Saúde Pública
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Id: lil-677069
Autor: Carvajal, Yuri; Yuing, Tuillang.
Título: Las estadísticas de salud no nacen de un repollo: jesuitas, aritméticas políticas, estigmergias y oligópticos / Health statistics aren't born in a cabbage patch: jesuits, political arithmetic, stigmergy and oligopticons
Fonte: Salud colect;9(1):91-102, ene.-abr. 2013. ilus.
Idioma: es.
Projeto: Conicyt. \"Controversias tecno-científicas en la reforma de salud: análisis desde la sociología de la traducción\".
Resumo: A partir de un análisis del contenido y la red productora de un mapa de 1751, elaborado por la misión circular de los jesuitas en Chiloé (archipiélago ubicado en la costa austral chilena), que contiene cifras de nacimientos, defunciones y habitantes, este artículo discute el rol de las estadísticas de salud, en diferentes registros: históricos, filosóficos, técnicos y sociológicos. De este modo, se busca comprender la génesis de un proceso de producción de cifras y referencias, para debatir de qué están hechas las estadísticas de salud, qué roles cumplen, sus vínculos con la construcción de colectivos y las condiciones de posibilidad de producciones diferentes. Tratamos de ensayar algunas hipótesis que muestran las estadísticas como articulación híbrida de elementos de índole muy diversa: epistemológicos, biopolíticos, históricos y filosóficos, reconociendo en ellos facetas religiosas y demográficas, ontológicas y étnicas, científicas y de gobierno.

By analyzing the content and network of production of a map from 1751, created by the circular mission of the Jesuits in Chiloé (an archipelago located off the southern coast of Chile), that contains birth, death and population data, this article discusses the role that health statistics play historically, philosophically, technically and sociologically. In doing so, the article seeks to comprehend the genesis of a process of production of data and references in order to debate what health statistics are composed of, what ends they are used for, what their connection is to the formation of collectives and the differential conditions of possibility that exist for producing statistics. We attempt to develop hypotheses that demonstrate statistics as a hybrid articulation between diverse elements, epistemological, biopolitical, historical and philosophical in nature, with facets at once religious and demographic, ontological and ethnic, scientific and governmental.
Descritores: Catolicismo/história
Mapas como Assunto
Missões Religiosas/história
Estatísticas Vitais
-Chile
Interpretação Estatística de Dados
Ilhas
Filosofia
Política
Limites: História do Século XVIII
Seres Humanos
Tipo de Publ: Artigo Histórico
Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME


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Texto completo SciELO Costa Rica
Texto completo
Id: lil-675458
Autor: Gutiérrez-Fonseca, Pablo E.; Ramírez, Alonso; Umaña, Gerardo; Springer, Monika.
Título: Macroinvertebrados dulceacuícolas de la Isla del Coco, Costa Rica: especies y comparación con otras islas del Pacífico Tropical Oriental / Freshwater macroinvertebrates from Cocos Island, Costa Rica: species and comparison with other islands of the Eastern Tropical Pacific
Fonte: Rev. biol. trop;61(2):657-668, Jun. 2013. ilus, graf, mapas, tab.
Idioma: es.
Resumo: Cocos Island is an oceanic island in the Eastern Pacific, at 496km from Cabo Blanco, Costa Rica. This 24km² island is surrounded by a protected marine area of 9 640km². It was declared National Park in 1978 and a World Heritage by UNESCO in 1997. Freshwater macroinvertebrate fauna was collected in 20 sites covering three rivers (Genio, Chatam and Sucio) and two creeks (Minuto and an unnamed creek behind the park rangers’ house). Tank bromeliads or phytotelmata were also examined for aquatic macroinvertebrates. Physicochemical parameters were determined in 13 study sites. Additionally, a comparison with other islands in the Eastern Tropical Pacific was conducted to determine the most important factors controlling the diversity in Tropical Pacific islands. A total of 455 individuals were collected belonging to 20 taxa (mostly identified to genus level) from 15 families of aquatic insects. Other macroinvertebrates such as Palaemonid shrimps, Hidrachnida and Oligochaeta were also collected. The family Staphylinidae (Coleoptera) was the most abundant, followed by Chironomidae (Diptera). Diptera was the order of insects with the highest taxonomic richness. A relationship between distance and the number of families was observed supporting the premises of the Theory of island Biogeography. This relationship was improved by correcting area by island elevation, indicating that mountainous islands had the richest faunas, potentially due to high cloud interception that feeds freshwater environments favoring the establishment of aquatic fauna. Physicochemical variables were similar in all sites, possibly due to the geology and the absence of significant sources of pollution on the island.

La Isla del Coco es una isla oceánica localizada en el Pacífico Tropical Oriental a unos 492km de Cabo Blanco. La isla cuenta con un área terrestre de 24km² y un área marina protegida de 9 640km². Fue declarada Parque Nacional en 1978 y Patrimonio de la Humanidad por la UNESCO en 1997. Se realizó una gira de recolecta del 22 de mayo al 12 junio 2008. Se recolectaron macroinvertebrados acuáticos en 20 tramos de tres ríos (Genio, Chatham y Sucio) y dos quebradas (Minuto y quebrada sin nombre atrás de estación de guarda parques). En 13 sitios se toma- ron parámetros fisicoquímicos. En total se recolectaron 455 individuos de 20 táxones de 15 familias de insectos acuáticos y otros macroinvertebrados. La familia Staphylinidae presentó la mayor abundancia seguida por Chironomidae, los dípteros fueron el orden con mayor riqueza taxonómica. Una relación entre distancia y número de familias se observó apoyando en parte la Teoría de Biogeografía de Islas. La relación mejoró al corregir área con elevación, indicando que islas montañosas tenían alta riqueza, posiblemente debido a la mayor intercepción de nubes que alimentan los ambientes dulceacuícolas que favorecen el establecimiento de la fauna acuática. Las variables ambientales fueron similares en todos los sitios.
Descritores: Ecossistema
Invertebrados/classificação
-Costa Rica
Ilhas
Densidade Demográfica
Limites: Animais
Tipo de Publ: Estudo Comparativo
Research Support, Non-U.S. Gov't
Responsável: CR1.1 - BINASSS - Biblioteca Nacional de Salud y Seguridad Social


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Texto completo SciELO Brasil
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Id: lil-649331
Autor: Lessa, ICM; Bergallo, HG..
Título: Modelling the population control of the domestic cat: an example from an island in Brazil / Modelando o controle populacional de gato doméstico: um exemplo de uma ilha no Brasil
Fonte: Braz. j. biol;72(3):445-452, Aug. 2012. ilus, tab.
Idioma: en.
Resumo: The domestic cat is an invasive species that often causes great impacts where introduced due to its high predatory and reproductive potential, especially on islands. In this study, carried out on Ilha Grande (RJ, Brazil), we aimed to: i) estimate the population density of domestic cats, ii) calculate the number of animals preyed upon annually by domestic cats, and iii) evaluate the efficiency of methods to control the cat population. We used the Vortex program to project the population growth of domestic cats in fifty years, and simulated different scenarios of population control (without control, castration, spay and harvest). Population density of owned cats was 662 cats/km². The annual predation rate was 1.97 prey animals/cat which is an average of 1497.96 prey/year. The population would only be reduced if 70% of females were spayed or removed annually. Measures to control the domestic cat population must be undertaken urgently, since uncontrolled growth of this predator has the potential to seriously impact the biodiversity of Ilha Grande.

O gato doméstico é uma espécie invasora que frequentemente causa grandes impactos onde é introduzido, em razão do seu alto potencial predatório e reprodutivo, especialmente em ilhas. Com este estudo realizado na Ilha Grande-RJ, Brasil, tivemos como objetivos: i) estimar a densidade populacional de gatos domésticos; ii) calcular o número de animais predados anualmente por gatos domésticos, e iii) estimar a eficiência de métodos para o controle da população de gatos. Nós utilizamos o programa Vortex para projetar o crescimento da população de gatos em 50 anos e simulamos diferentes cenários de controle populacional: sem controle, castração, esterilização de fêmeas e remoção de indivíduos. A densidade populacional de gatos que possuem donos foi de 662 gatos/km². A taxa anual de predação foi de 1,97 animais predados/gato, ou seja, uma média de 1497,96 presas/ano. A população de gatos pode ser reduzida apenas se no mínimo 70% das fêmeas forem esterilizadas ou removidas anualmente. Medidas para o controle populacional de gatos domésticos devem ser tomadas com urgência, uma vez que o crescimento descontrolado da população desse predador tem o potencial de causar graves impactos à biodiversidade da Ilha Grande.
Descritores: Gatos/fisiologia
Espécies Introduzidas
Comportamento Predatório/fisiologia
-Brasil
Ilhas
Densidade Demográfica
Crescimento Demográfico
Controle da População/métodos
Limites: Animais
Feminino
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME



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